Western Zone Zone Boys 10 & under - 50 Y Breast
These rankings show the swimmers' placement within their Zone.They are based on the swimmer's personal best, their current age category, and team; and are calculated from all the meets results.
For each swimmer, you can find the swimmer's ranking, their best time, the corresponding time standard, as well as how much faster the swimmer needs to be to reach the next level. The last columns provide information about the event they achieved this personal best.
Swimmer Rankings
| Ranking | Name | Time | Age | Standard | to Next Standard | Team | Date | Meet | |
|---|---|---|---|---|---|---|---|---|---|
| 101 | Hongjie Xiao | 41.19 | 9 | A Min | AA: 40.19 (+1.00s | 2.4%) | Irvine Novaquatics | 03/12/2026 | 2026 SCS Spring Age Group Champs @ RMDA Cop | |
| 102 | Liam Reyes | 41.24 | 10 | A Min | AA: 40.19 (+1.05s | 2.5%) | Reno Aquatic Club | 03/14/2026 | 2026 NNA AGO | |
| 103 | Landon Wang | 41.24 | 10 | A Min | AA: 40.19 (+1.05s | 2.5%) | Seattle Metropolitan Aquatic C | 11/22/2025 | 2025 PN Nov AGI, Division 2 (SMAC) | |
| 104 | Jackson Lee | 41.24 | 10 | A Min | AA: 40.19 (+1.05s | 2.5%) | Burlingame Aquatics | 10/25/2025 | TYR BAC SPOOKY FALL CLASSIC | |
| 105 | Matvey Fadeev | 41.25 | 10 | A Min | AA: 40.19 (+1.06s | 2.6%) | Issaquah Swim Team | 11/15/2025 | 2025 PN IST November Invitational | |
| 106 | Jake Zobec | 41.29 | 10 | A Min | AA: 40.19 (+1.10s | 2.7%) | Denver Triton Swim Team | 02/01/2026 | 2026 CO FORM February Freeze | |
| 107 | Bennett Arguello | 41.29 | 9 | A Min | AA: 40.19 (+1.10s | 2.7%) | Greenwood Tiger Sharks | 02/27/2026 | 2026 CO CSI SC Age Group Championships | |
| 108 | Thomas Halford | 41.31 | 10 | A Min | AA: 40.19 (+1.12s | 2.7%) | Pikes Peak Athletics | 02/27/2026 | 2026 CO CSI SC Age Group Championships | |
| 109 | Adrian Deng | 41.32 | 10 | A Min | AA: 40.19 (+1.13s | 2.7%) | Mission Viejo Nadadores | 02/13/2026 | 2026 MVN Lunar AAPI Festival | |
| 110 | Calvin Larkin | 41.38 | 9 | A Min | AA: 40.19 (+1.19s | 2.9%) | Bend Swim Club | 02/21/2026 | 2026 Arena Short Course 10 U Championships | |
| 111 | Hunter Atkins | 41.41 | 10 | A Min | AA: 40.19 (+1.22s | 2.9%) | Palo Alto Stanford Aquatics | 03/20/2026 | SCY Spring Age Group Championships | |
| 112 | Anthony Ma | 41.43 | 10 | A Min | AA: 40.19 (+1.24s | 3.0%) | Cottonwood Heights Aquatics | 12/13/2025 | 2025 UTAH Winter Classic | |
| 113 | Eric Zeng | 41.46 | 9 | A Min | AA: 40.19 (+1.27s | 3.1%) | Canyons Aquatic Club | 12/12/2025 | 2025 CA GWSC Winter Age Group Invitational | |
| 114 | Sinan Ozgur | 41.49 | 10 | A Min | AA: 40.19 (+1.30s | 3.1%) | Pleasanton Seahawks | 02/20/2026 | Pacific Swim SCY C B BB+ Meet Hosted By TERA | |
| 115 | Julian Phillips | 41.51 | 10 | A Min | AA: 40.19 (+1.32s | 3.2%) | Quicksilver Swimming | 03/20/2026 | SCY Spring Age Group Championships | |
| 116 | Devin Song | 41.53 | 9 | A Min | AA: 40.19 (+1.34s | 3.2%) | Rose Bowl Aquatics | 03/12/2026 | 2026 SCS Spring Age Group Champs @ RMDA Cop | |
| 117 | Oliver Pearce | 41.55 | 10 | A Min | AA: 40.19 (+1.36s | 3.3%) | Aces Swim Club | 02/14/2026 | 2026 CO ACES Winter Open | |
| 118 | Ludwik Pawelski | 41.56 | 9 | A Min | AA: 40.19 (+1.37s | 3.3%) | Sparks Piranhas Swim Team | 02/06/2026 | 2026 Valentines Day Age Group Open | |
| 119 | Yihong Xiang | 41.57 | 10 | A Min | AA: 40.19 (+1.38s | 3.3%) | Tualatin Hills Swim Club | 05/16/2026 | 2026 John DeRoest Sextathlon Swim Meet | |
| 120 | Max Ong | 41.59 | 10 | A Min | AA: 40.19 (+1.40s | 3.4%) | Pacific Swim | 03/06/2026 | 2026 SI 14U AGE GRP CHAMPIONSHIPS | |
| 121 | Landon Gura | 41.60 | 10 | A Min | AA: 40.19 (+1.41s | 3.4%) | North Coast Aquatics | 03/06/2026 | 2026 SI 14U AGE GRP CHAMPIONSHIPS | |
| 122 | Duke Layco | 41.63 | 10 | A Min | AA: 40.19 (+1.44s | 3.5%) | Hawaii Swimming Club | 04/18/2026 | 44th Annual Harry Mamizuka Invitational | |
| 123 | Adelynn Spurlin | 41.64 | 10 | A Min | AA: 40.19 (+1.45s | 3.5%) | North Jeffco Swim Team | 02/27/2026 | 2026 CO CSI SC Age Group Championships | |
| 124 | Parker Sampson | 41.65 | 10 | A Min | AA: 40.19 (+1.46s | 3.5%) | Denver Swim Academy | 02/27/2026 | 2026 CO CSI SC Age Group Championships | |
| 125 | Elliott Ganancial | 41.66 | 10 | A Min | AA: 40.19 (+1.47s | 3.5%) | Aloha Aquatics Association | 04/18/2026 | 44th Annual Harry Mamizuka Invitational | |
| 126 | Brian Yu | 41.67 | 10 | A Min | AA: 40.19 (+1.48s | 3.6%) | Dare Aquatics | 03/12/2026 | 2026 SCS Spring Age Group Champs @ RMDA Cop | |
| 127 | Luka McGrath | 41.69 | 10 | A Min | AA: 40.19 (+1.50s | 3.6%) | Multnomah Athletic Club | 01/23/2026 | 2026 TTSC Winter Qualifier | |
| 128 | Jaezyn Magnaye | 41.74 | 10 | A Min | AA: 40.19 (+1.55s | 3.7%) | Tualatin Hills Swim Club | 05/16/2026 | 2026 John DeRoest Sextathlon Swim Meet | |
| 129 | Yangyang Xu | 41.77 | 10 | A Min | AA: 40.19 (+1.58s | 3.8%) | Pacific Dragons Swim Team | 03/19/2026 | 2026 NW Region Age Group Champs Approved | |
| 130 | Mateo Sison | 41.78 | 10 | A Min | AA: 40.19 (+1.59s | 3.8%) | San Ramon Valley Aquatics | 07/26/2025 | Zone 2 Summer Championships | |
| 131 | Yixuan Zhu | 41.82 | 10 | A Min | AA: 40.19 (+1.63s | 3.9%) | Pleasanton Seahawks | 03/28/2026 | PC CDST SC C B BB+ Meet | |
| 132 | Cameron Day | 41.82 | 10 | A Min | AA: 40.19 (+1.63s | 3.9%) | Mission Viejo Nadadores | 12/12/2025 | 2025 CA SCS RAA WAG | |
| 133 | Walker Lewis | 41.83 | 10 | A Min | AA: 40.19 (+1.64s | 3.9%) | Excel Aquatics | 01/16/2026 | 2026 TYR Mardi Gras Invite | |
| 134 | Eli Lawson | 41.88 | 9 | A Min | AA: 40.19 (+1.69s | 4.0%) | Dolphin Aquatics | 03/12/2026 | 2026 SCS Spring Age Group Champs @ RMDA Cop | |
| 135 | Koa Tejwani | 41.92 | 9 | A Min | AA: 40.19 (+1.73s | 4.1%) | Jcc Waves | 03/12/2026 | 2026 SCS Spring Age Group Champs @ RMDA Cop | |
| 136 | William Yao | 41.98 | 10 | A Min | AA: 40.19 (+1.79s | 4.3%) | Fontana Aquatics Club | 03/12/2026 | 2026 SCS Spring Age Group Champs @ RMDA Cop | |
| 137 | Koa Maday | 41.99 | 10 | A Min | AA: 40.19 (+1.80s | 4.3%) | Kona Aquatics Club | 03/19/2026 | 2026 Northwest Region AG Champs Approved | |
| 138 | David Chen | 42.03 | 10 | A Min | AA: 40.19 (+1.84s | 4.4%) | Tualatin Hills Swim Club | 02/21/2026 | 2026 Arena Short Course 10 U Championships | |
| 139 | Kevin Nguyen | 42.04 | 10 | A Min | AA: 40.19 (+1.85s | 4.4%) | Legacy Aquatics | 03/19/2026 | 2026 Northwest Region AG Champs Approved | |
| 140 | Mark Kiselev | 42.12 | 9 | BB Min | A: 42.09 (+0.03s | 0.1%) | Royal Swim Team | 03/12/2026 | 2026 SCS Spring Age Group Champs @ RMDA Cop | |
| 141 | Arthur Shackelton | 42.13 | 10 | BB Min | A: 42.09 (+0.04s | 0.1%) | Lakeridge Swim Team | 02/06/2026 | 2026 Valentines Day Age Group Open | |
| 142 | Kai Kitamori | 42.14 | 10 | BB Min | A: 42.09 (+0.05s | 0.1%) | East Bay Bat Rays | 05/17/2026 | Montclair 14 Under Short Course Pentathlon | |
| 143 | Cheng Dou | 42.17 | 10 | BB Min | A: 42.09 (+0.08s | 0.2%) | Alto Swim Club | 03/20/2026 | SCY Spring Age Group Championships | |
| 144 | Yusen Wang | 42.20 | 9 | BB Min | A: 42.09 (+0.11s | 0.3%) | Irvine Novaquatics | 03/12/2026 | 2026 SCS Spring Age Group Champs @ RMDA Cop | |
| 145 | Anderson Bradley | 42.21 | 10 | BB Min | A: 42.09 (+0.12s | 0.3%) | Coastal Machine Aquatics Club | 03/12/2026 | 2026 SCS Spring Age Group Champs @ RMDA Cop | |
| 146 | Jayden Zhen | 42.22 | 10 | BB Min | A: 42.09 (+0.13s | 0.3%) | Adrienne C Nelson | 02/15/2025 | 2025 OR HS 6a 4 | |
| 147 | Mason Folster | 42.22 | 10 | BB Min | A: 42.09 (+0.13s | 0.3%) | Gold Medal Swim Club | 02/13/2026 | 34th Annual Lost Dutchman Invitational | |
| 148 | Kaizen Toung | 42.24 | 9 | BB Min | A: 42.09 (+0.15s | 0.4%) | Orinda Aquatics | 11/08/2025 | Brentwood Seawolves SCY C B BB+ | |
| 149 | Phillippe Choi | 42.27 | 10 | BB Min | A: 42.09 (+0.18s | 0.4%) | Blast Sharks | 12/12/2025 | 2025 CA SCS RAA WAG | |
| 150 | Jake McNair | 42.34 | 9 | BB Min | A: 42.09 (+0.25s | 0.6%) | Bellevue Club Swim Team | 03/19/2026 | 2026 Northwest Region AG Champs Approved | |
Disclaimer: This Website is not affiliated with USA Swimming or any Local Swim Committee. The rankings and times displayed on this website are unofficial and should not be viewed as such. We update our information regularly, but we cannot guarantee that the data is accurate, timely, or complete. The only purpose of this website is entertainment. None of the information here should be used for university admission applications.